Add an option for deleting unused images after webhook update

[Profiidev]

Is your feature request related to a problem? Please describe

When i use webhooks to update my stacks i have to go through my images from time to time and delete all unused images to not clutter my server

Describe the solution you'd like

A setting or query parameter to automaticly remove the unused images

Describe alternatives you've considered

You could use docker prune but i only want to remove unused images from the specific stack and not all unused images

Additional context

No response